Margarita Salas (1938–2019)

Glucokinase of Rabbit Liver PURIFICATION AND PROPERTIES* Josti SALAS,~ MARGARITA SALAS,$ ELADIO VIRUELA,J AND ALBERTO SOLS

It has been recently shown that in rat liver there are two enzymes which phosphorylate glucose to glucose 6-phosphate. One of them is a hexokinase with a great affinity for glucose and, like those of other animal tissues it is inhibited by glucose 6phosphate; the other one, named glucokinase, has a low affinity for glucose, is not inhibited by glucose 6phosphate, and appears to be responsible f...

Margarita Korovina

Pfaffian Hybrid Systems. Pfaffian hybrid systems, which we recently introduced in [18], are a sub-class of o-minimal hybrid systems which capture rich continuous dynamics and yet can be studied using finite bisimulations. In particular Pfaffian hybrid systems include hybrid systems with continuous dynamics definable by functions such as exp, sin, cos, and other trigonometric functions in approp...

The Master and Margarita: An Analysis

Fatal toxoplasmosis in sand cats (Felis margarita).

The sand cat (Felis margarita) is a small-sized felid occurring in the United Arab Emirates (UAE). The sand cat captive-breeding program at the Breeding Centre for Endangered Arabian Wildlife in Sharjah, UAE, has until recently been severely compromised by very high newborn mortality rates. Two different pairs of sand cats gave birth, respectively, to one and two litters (with a total of eight ...

ON THE SALAS THEOREM AND HYPERCYCLICITY OF f(T )

We study hypercyclicity properties of functions of Banach space operators. Generalizations of the results of Herzog-Schmoeger and Bermudez-Miller are obtained. As a corollary we also show that each non-trivial operator commuting with a generalized backward shift is supercyclic. This gives a positive answer to a conjecture of Godefroy and Shapiro. Furthermore, we show that the norm-closures of t...